Fire-alarm.



R [.BRINKLEY.

FIRE ALARM.

APPLICATION mio mm1. 1915.

'L-LSU. I .PatentedSept.21,v1915.

tion received by the telephone, will be trans-I mitted from the AWires leading therefrom to the central telephone station, whereupon the operator 'of such station Will convey the information received to fire headquarters. By this cycle of operation, the various fire companies can quickly and accurately locate the point at which the re prevails Without first locating the box commonly used forv sounding such fire alarms.

It may here be explained, that the infon mation to be communicatedto the central telephone office, may be duplicated a number of times on the record 6, 'thereby insuring that such station will receive the proper information.

Above, l have particularly described a circuit closer 30, which device may be in the form illustrated in the drawings or may be of any appropriate type. ln the present embodiment, however., this element is shown as comprising a` plate 35 which may Well be attacliedto the ceiling of a room or to another appropriate support, a pair of rigid `posts v36 and v3b which depend from the oppositeends of said plate, a thirdI rigid post 237 depending from thel intermediate portion of said plate, and carrying the terminal 29, and a pivoted post 37, this last named post being equipped with a contact point adapted lto be brought into Contact With a similar point on the post 37, by a spring 38 when a highly combustible connecton) is severed by fire. By reference to the drawing, it will be seen that one end of the spring 38 is connected to the post 3G While its other end is connected to the free end of the pivoted post 37 Whereas the opposite ends ot' the combustible member 39 are connected respectively with such post 37 and with the othei1 post 36.

As herein before stated, practically any appropriate form of circuit closer could be employed in connection with the system described, but since the speciiic form just described is very simple in construction and yet is very eflicient, l prefer to 'use the same.

l have described and illustrated but one unit of the system since this is ample to convey the novel features of the device, but it is t0 be understood that such units may be duplicated at the necessary points, and in fact, a number of circuit closers 30 could Well be positioned at diiierent partsoi a building and could be so' connected with the electro-magnets 25 as to energize the same, when any particular one of such cl'nsers is operated.

From the foregoing description, taken in connection with the accompanying draivings, it Will be seen that a very simple and eihcient fire alarm system has been pro- -f intenso ,vided for carrying out the object of the inventionfand that the graphophone and telephone may be of ordinary construction, Whereas the other salient features ol? the mechanism may be inexpensively manufactured and may easily be applied to use.

l. A lire alarm comprising a telephone and a normally idle graphoplione, the graplr ophone being adapted to announce to the telephone, the location of the fire when set in motion, an operating member to be actuated to set the grapliophone in motion, and a circuit closing member to close the circuit oi' the telephone, in combination with a base disposed between the telephone and the grapliophone, a pair oi spaced standards rising `from said base, a pair oiE substantially horizontal levers fulcrumed to saidv standards, a connection between one lever and the operating member of the graphophone, a second connection between the otherlever and the circuit closing member of the telephone, electro-magnetic inea-ns on the base below the levers and adapted to operate the same when energized, an electric circuit including said electro-magnetic means and a source of current, and a lire operated circuit closer likewisev included in said circuit.

2. A device designed to be used in connection with a telephone and a graphophone, the graphophone being arranged with its transmitting horn in alineinent with the receiving horn of the telephone, whereby the grapliophone is adapted to announce amessage to the telephone when set in motion, comprising f. base, a pair or' spaced standards rising `from said base, a horizontal lever fulcrumed intermediately of its ends to one of said standards, a link pivotally connected to the outer end or' said lever and adapted at its other end for pivotal connection with the circuit controlling arm of said telephone, a lever ulcrumed intermediately o its ends to the other standard, the inner end of said lever being substantially horizontal and the outer end being bent upwardly whereby to form substantially a bell crank lever, a link pivotally connected at one end to the outer end of said bell crank lever, means for connecting the other end ot' the link to the starting member of the V4graphophone, and electromagnets secured to said base, one being ar ranged beneath the inner ends of each of said levers. i

ln testimony whereof l have hereunto set my hand in presence of tivo subscribing witnesses.

RGBERTL. BRNKLEY. llitnesses J. B. Crnvnn, FALLrn lm'rns.

Genies et this patent may he obtained :fr .five cents cach, by addressing the enimssiener Entente,

v Washington, F3. tt 

